CN108095867A - A kind of four sides can strut type Invasive lumbar fusion device - Google Patents
A kind of four sides can strut type Invasive lumbar fusion device Download PDFInfo
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- CN108095867A CN108095867A CN201810144108.6A CN201810144108A CN108095867A CN 108095867 A CN108095867 A CN 108095867A CN 201810144108 A CN201810144108 A CN 201810144108A CN 108095867 A CN108095867 A CN 108095867A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30518—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements with possibility of relative movement between the prosthetic parts
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- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
The present invention relates to Invasive lumbar fusion device the field of medical instrument technology,Specifically a kind of four sides can strut type Invasive lumbar fusion device,The Invasive lumbar fusion device is made of fusion contact mechanism and driving spreading mechanism,Fusion contact mechanism is made of upper fusion contact assembly and lower fusion contact assembly,Upper fusion contact assembly is by preceding upper fusion block,Upper fusion block composition afterwards,Lower fusion contact assembly is made of front lower fusion block and rear lower fusion block,Preceding upper fusion block,Upper fusion block afterwards,The inside of front lower fusion block and rear lower fusion block is equipped with groove,Spreading mechanism is driven by left propulsion assembly,Right propulsion assembly composition,Left propulsion assembly is by left forward block,Drive trombone slide composition,Right propulsion assembly is by right forward block,Drive screw rod and retainer ring composition,With the height and tension for recovering vertebra section,It realizes and releases compressing,Recover vertebra physiological camber,Invasive lumbar fusion device Bony union,The advantages that ensureing spinal stabilization.
Description
Technical field
The present invention relates to Invasive lumbar fusion device the field of medical instrument technology, specifically a kind of supports using Invasive lumbar fusion device
Opening force recovers the height and tension of vertebra section, realizes and releases compressing, recovery vertebra physiological camber, Invasive lumbar fusion device Bony union,
Type Invasive lumbar fusion device can be strutted by ensureing the four sides of spinal stabilization.
Background technology
It is well known that backbone retrogression is common on Orthopedic Clinical, degeneration of intervertebral disc common are, spinal canal stenosis,
Spondylolisthesis, oppressing spinal cord or nerve root person often needs operative treatment, thoroughly releases compressing, recovers vertebra physiological camber, ensures ridge
Column is stablized.Another part deformity of spine, wound, tumour, reprocess operation and infected patient also need sometimes row interbody fusion with
Stablize lumbar motion segment.Invasive lumbar fusion device is directed to more than spinal disease and has a better effect, easy to operate, easy to use, fusion
Rate is high, and the complication of no bone grafting fusion, through commonly used with clinical, but existing Invasive lumbar fusion device stability is not high
Defect.
The content of the invention
Present invention aim to address above-mentioned the deficiencies in the prior art, provide a kind of distracting force using Invasive lumbar fusion device,
Recover the height and tension of vertebra section, realize and release compressing, recover vertebra physiological camber, Invasive lumbar fusion device Bony union ensures
The four sides of spinal stabilization can strut type Invasive lumbar fusion device.
The technical solution adopted by the present invention to solve the technical problems is：
A kind of four sides can strut type Invasive lumbar fusion device, it is characterised in that the Invasive lumbar fusion device is strutted by fusion contact mechanism and driving
Mechanism forms, and the fusion contact mechanism is made of upper fusion contact assembly and lower fusion contact assembly, upper fusion contact group
Part is by preceding upper fusion block, upper fusion block forms afterwards, and the preceding upper fusion block and the afterwards both ends of upper fusion block are respectively equipped with oblique
Inclined upper wedge surface on the inside of lower section, the wedge surface at the both ends of the preceding upper fusion block are equipped with from bottom to top and are increasingly towards front
Inclined convex traveller, the wedge surface at the both ends of described rear upper fusion block be equipped with it is preceding on merge the convex traveller pair at block both ends
Claim from bottom to top and be increasingly towards the convex traveller of back sweep, the lower fusion contact assembly by front lower fusion block and after
The both ends of lower fusion block composition, the front lower fusion block and rear lower fusion block are respectively equipped with inclined hyposphene on the inside of oblique top
Face, the wedge surface at the both ends of front lower fusion block be equipped with from top to bottom and be increasingly towards front it is inclined under convex traveller, rear lower fusion
The wedge surface at the both ends of block is equipped with to be merged under block both ends convex traveller and symmetrically from top to bottom and is increasingly towards rear and inclines with front lower
Convex traveller under tiltedly, the preceding upper fusion block, the rear upper inside for merging block, front lower fusion block and rear lower fusion block are equipped with for driving
The distracted groove of dynamic spreading mechanism, the driving spreading mechanism are made of left propulsion assembly, right propulsion assembly, and the left side pushes away
Be made of into component left forward block, driving trombone slide, the top of left forward block be equipped with it is preceding on merge block and the rear upper block that merges coordinates
Slide upper slip wedge surface, it is upper slip wedge surface be equipped with it is symmetrical and inclined towards front and rear sides and respectively with it is preceding on merge block
Convex traveller and the convex traveller of rear upper fusion block be engaged the upper hopper chute of slip, the lower section of left forward block is equipped with melts with front lower
Block and the lower slider wedge surface of rear lower fusion block cooperation slip are closed, lower slider wedge surface is equipped with symmetrical and is tilted towards front and rear sides
And respectively with the front lower gliding groove for merging convex traveller under convex traveller under block and rear lower fusion block and being engaged slip, left propulsion
The right end of block is connected with driving trombone slide composition, the left end of the driving trombone slide with left forward block, drives the inner tubal wall of trombone slide
Internal thread is equipped with, the right propulsion assembly is made of right forward block, driving screw rod and retainer ring, the top of the right forward block
Equipped with it is preceding on merge block and upper slip wedge surface that rear upper fusion block cooperation is slided, upper slip wedge surface are equipped with symmetrical and direction
Front and rear sides it is inclined and respectively with it is preceding on merge block the convex traveller of convex traveller and rear upper fusion block be engaged slip
Upper hopper chute, the lower section of right forward block is equipped with merges block and the rear lower lower slider wedge surface for merging block cooperation and sliding, lower slider with front lower
Wedge surface is equipped with symmetrical and inclined towards front and rear sides and merges convex traveller and rear lower fusion block under block with front lower respectively
Under convex traveller be engaged the gliding groove of slip, the middle part of right forward block is equipped with the step through-hole passed through for driving screw rod, described
Step through-hole be made of single order through hole, second order through hole and three rank through holes, step through-hole is followed successively by single order through hole, two from left to right
Simultaneously diameter is sequentially increased for rank through hole and three rank through holes, and one end of the driving screw rod leads to through single order through hole and with driving trombone slide
Threaded connection is crossed, the other end of screw rod is driven to put in second order through hole and equipped with baffle, the rear end of baffle, which is equipped with, puts in three rank through holes
Interior driving column, the bottom of the three rank through holes are equipped with the card collar groove of annular, and connection retainer ring makes retainer ring block drive in card collar groove
The baffle of dynamic spiro rod rear end and then fixed driving screw rod, by rotation driving column, and then drive drive screw turns to make left propulsion
Block and right forward block close to mobile, by convex traveller and upper hopper chute, under slip between convex traveller and gliding groove extend out effect
And then upper fusion block, rear upper fusion block, front lower fusion block and rear lower fusion block extend out expansion before making.
The angle of inclination of convex traveller of the present invention convex traveller under is 10 ~ 30 degree, while ensureing that four-way struts
Also it can prevent distraction angle is excessive to cause secondary injury.
It is equipped with before of the present invention on the outside of upper fusion block, rear above fusion block, front lower fusion block and the rear lower back for merging block
Anti-slip tank, upper fusion block, rear upper fusion block, front lower fusion block and rear lower fusion block are firmly held in intervertenral space before making, and are prevented
Sliding stop.
The present invention is since the Invasive lumbar fusion device by fusion contact mechanism and drives spreading mechanism to form, fusion contact
Mechanism is made of upper fusion contact assembly and lower fusion contact assembly, and upper fusion contact assembly is by preceding upper fusion block, rear upper fusion
Block forms, and lower fusion contact assembly is made of front lower fusion block and rear lower fusion block, the preceding upper fusion block, rear upper fusion
The inside of block, front lower fusion block and rear lower fusion block is equipped with for the driving distracted groove of spreading mechanism, and the driving struts machine
Structure is made of left propulsion assembly, right propulsion assembly, and the left propulsion assembly is made of left forward block, driving trombone slide, the right side
Propulsion assembly is made of right forward block, driving screw rod and retainer ring, driving trombone slide and right forward block due to the connection of left forward block
Spiral pulling function between driving screw rod makes preceding upper fusion block, rear upper block, front lower fusion block and the rear lower fusion block of merging upper
Convex traveller and upper hopper chute, under under the action of convex traveller and gliding groove, by preceding upper fusion block, rear upper fusion block, front lower fusion block and
Lower fusion block gradually increases up and down with the distance of left and right afterwards, realizes that strut fusion device progressively struts effect, has and utilize intervertebral
The distracting force of fusion device recovers the height and tension of vertebra section, realizes and releases compressing, recovers vertebra physiological camber, intervertebral fusion
The advantages that device Bony union, guarantee spinal stabilization.
Description of the drawings
Fig. 1 is the structure diagram of the present invention.
Fig. 2 is that the present invention struts pre-structure schematic diagram.
Fig. 3 is that the present invention struts rear structure diagram.
Fig. 4 is the sectional view of Fig. 2.
Fig. 5 is left propulsion assembly structure diagram in the present invention, wherein, 5-1 is stereogram, and 5-2 is front view, and 5-3 is
Right view, 5-4 are top views.
Fig. 6 is the structure diagram of right forward block in the present invention, wherein, 6-1 is stereogram, and 6-2 is front view, and 6-3 is
Right view, 6-4 are top views.
Fig. 7 is the mechanism signal of preceding upper fusion block in the present invention, rear upper fusion block, front lower fusion block and rear lower fusion block
Figure, wherein 7-1 is stereogram, and 7-2 is front view, and 7-3 is look up figure.
Specific embodiment
The present invention is further described below in conjunction with the accompanying drawings：
As shown in drawings, a kind of four sides can strut type Invasive lumbar fusion device, it is characterised in that the Invasive lumbar fusion device is by fusion contact machine
Structure and driving spreading mechanism composition, the fusion contact mechanism are made of upper fusion contact assembly and lower fusion contact assembly,
Upper fusion contact assembly is by preceding upper fusion block 1, upper fusion block 2 forms afterwards, the preceding upper fusion block 1 and afterwards upper fusion block 2
Both ends are respectively equipped with inclined upper wedge surface 3 on the inside of oblique lower section, and the wedge surface at the both ends of the preceding upper fusion block 1 is equipped under
Upwards and be increasingly towards the inclined convex traveller 4 in front, the wedge surface at the both ends of the rear upper fusion block 2 be equipped with it is preceding on melt
The convex traveller 4 for closing block 1 both ends symmetrical from bottom to top and is increasingly towards the convex traveller 4 of back sweep, the lower fusion
Contact assembly is made of front lower fusion block 23 and rear lower fusion block 24, the front lower fusion block 23 and afterwards the two of lower fusion block 24
End is respectively equipped with inclined lower wedge surface 5 on the inside of oblique top, the wedge surface at the both ends of front lower fusion block 2 be equipped with from top to bottom and by
Gradually towards front it is inclined under convex traveller 6, the wedge surface at the both ends of rear lower fusion block 24 is equipped with and front lower 23 both ends of block of merging
Under convex traveller 6 is symmetrical from top to bottom and is increasingly towards convex traveller 6 under back sweep, the preceding upper fusion block 1, it is rear on melt
The inside for closing block 2, front lower fusion block 23 and rear lower fusion block 24 is equipped with for the driving distracted groove 7 of spreading mechanism, the drive
Dynamic spreading mechanism is made of left propulsion assembly, right propulsion assembly, and the left propulsion assembly is by left forward block 14, driving trombone slide 15
Composition, the top of left forward block 14 be equipped with it is preceding on merge block 1 and rear upper fusion block 2 coordinates the upper slip wedge surface 10 of slip, on
Slide wedge surface 10 be equipped with it is symmetrical and inclined towards front and rear sides and respectively with it is preceding on merge block 1 convex traveller 4 and after
The convex traveller 4 of upper fusion block 2 is engaged the upper hopper chute 11 of slip, the lower section of left forward block 8 be equipped with it is front lower merge block 23 and
The lower slider wedge surface 12 that lower fusion block 24 cooperation is slided afterwards, lower slider wedge surface 12 are equipped with symmetrical and are tilted towards front and rear sides
And respectively with the front lower gliding groove for merging convex traveller 6 under convex traveller 6 under block 23 and rear lower fusion block 24 and being engaged slip
13, right end and the driving trombone slide 9 of left forward block 8 form, and the left end of the driving trombone slide 9 is connected with left forward block 8, driving
The inner tubal wall of trombone slide 9 is equipped with internal thread, and the right propulsion assembly is made of right forward block 14, driving screw rod 15 and retainer ring 16,
The top of the right forward block 14 be equipped with it is preceding on merge block 1 and rear upper fusion block 2 coordinates the upper slip wedge surface 10 of slip, on
Slide wedge surface 10 be equipped with it is symmetrical and inclined towards front and rear sides and respectively with it is preceding on merge block 1 convex traveller 4 and after
The convex traveller 4 of upper fusion block 2 is engaged the upper hopper chute 11 of slip, the lower section of right forward block 14 be equipped with it is front lower merge block 23 and
The lower slider wedge surface 12 that lower fusion block 24 cooperation is slided afterwards, lower slider wedge surface 12 are equipped with symmetrical and are tilted towards front and rear sides
And respectively with the front lower gliding groove for merging convex traveller 6 under convex traveller 6 under block 23 and rear lower fusion block 24 and being engaged slip
13, the middle part of right forward block 14 is equipped with the step through-hole passed through for driving screw rod, and the step through-hole is by single order through hole 17, two
18 and three rank through hole 19 of rank through hole forms, and step through-hole is followed successively by single order through hole 17 from left to right, 18 and three rank of second order through hole is led to
Simultaneously diameter is sequentially increased in hole 19, and one end of the driving screw rod 15 passes through screw thread through single order through hole 17 and with driving trombone slide 9
Connection, the other end of driving screw rod 15 put in second order through hole 18 and equipped with baffle 20, and the rear end of baffle 20, which is equipped with, to be put in three ranks and lead to
Driving column 21 in hole 19, the bottom of the three rank through holes 19 are equipped with the card collar groove 22 of annular, retainer ring are connected in card collar groove 22
16 make retainer ring 16 block the baffle 20 of 15 rear end of driving screw rod and then fixed driving screw rod 15, by rotation driving column 21, and then
The driving rotation of screw rod 15 is driven to make left forward block 14 and right forward block 15 close to mobile, by convex traveller 4 and upper hopper chute 11, under
Slip between convex traveller 6 and gliding groove 13 upper fusion block 1, rear above fusion block 2, front lower fusion block 23 before extending out effect and then making
Expansion is extended out with rear lower fusion block 24, the angle of inclination of the convex traveller 4 convex traveller 6 under is 10 ~ 30 degree, ensures four-way
Also it can prevent distraction angle is excessive to cause secondary injury while strutting, upper fusion block, rear upper fusion block, front lower fusion before described
Anti-slip tank 25 is equipped on the outside of the back of block and rear lower fusion block, upper fusion block 1, rear upper fusion block 2,23 and of front lower fusion block before making
Lower fusion block 24 is firmly held in intervertenral space afterwards, anti-sliding stop.
In the use of the present invention, preceding upper fusion block 1, rear upper fusion block 2, front lower fusion block 23 and rear lower fusion block 24 are led to
Cross convex traveller 4 and upper hopper chute 11, under effect between convex traveller 6 and gliding groove 13 connect with left forward block 8 and right forward block 14
It is connected together, 15 left end of screw rod then will be driven to be connected through the step through-hole on right forward block 14 with driving trombone slide 9, driven
The baffle 20 of 15 right end of screw rod finally will drive screw rod 15 to be fixed on 14 on right forward block through retainer ring 16, then drive screw
15, make in 15 spiral drive trombone slide 9 of driving screw rod, finally realize 14 movement close to each other of left forward block 8 and right forward block, by
During near mobile, due to upper wedge surface 3 and the upper interaction for sliding wedge surface 10, lower wedge surface 5 and lower slider wedge surface 12, before making
Upper fusion block 1 and rear upper fusion block 2 with it is front lower merge block 23 and afterwards under merge block distance increase about 24, it is gradual in upper and lower distance
During increased, due to convex traveller 4 and upper hopper chute 11, under the tilting action of convex traveller 6 and gliding groove 13 make before upper fusion
The longitudinal separation of block 1 and rear upper fusion block 2, front lower fusion block 23 and rear lower fusion block 24 gradually increases, therefore realizes simultaneously
Under, left and right four direction while strut, the present invention due to the Invasive lumbar fusion device by fusion contact mechanism and driving spreading mechanism
Composition, the fusion contact mechanism by it is upper fusion contact assembly and it is lower fusion contact assembly form, it is upper fusion contact assembly by
Preceding upper fusion block 1, rear upper fusion block 2 form, and lower fusion contact assembly is made of front lower fusion block 23 and rear lower fusion block 24, institute
The inside of preceding upper fusion block 1, rear upper fusion block 2, front lower fusion block 23 and the rear lower fusion block 24 stated is equipped with struts machine for driving
The distracted groove 7 of structure, the driving spreading mechanism are made of left propulsion assembly, right propulsion assembly, the left propulsion assembly
It being made of left forward block 8, driving trombone slide 9, the right propulsion assembly is made of right forward block 14, driving screw rod 15 and retainer ring 16,
On before being made due to the spiral pulling function between the driving trombone slide 9 of left forward block 8 connection and the driving screw rod 15 of right forward block 14
Merge block 1, rear upper fusion block 2, front lower fusion block 23 and rear lower fusion block 24 convex traveller 4 and upper hopper chute 11, under convex traveller 6
Under the action of gliding groove 13, by preceding upper fusion block 1, rear upper fusion block 2, front lower fusion block 23 and rear lower fusion block about 24 and
The distance of left and right gradually increases, and realizes the distracting force for progressively strutting effect, having using Invasive lumbar fusion device for strutting fusion device, extensive
The height and tension of multiple vertebra section, realizes and releases compressing, recovers vertebra physiological camber, and Invasive lumbar fusion device Bony union ensures ridge
The advantages that column is stablized.
Claims (3)
1. a kind of four sides can strut type Invasive lumbar fusion device, it is characterised in that the Invasive lumbar fusion device is supportted by fusion contact mechanism and driving
Opening mechanism forms, and the fusion contact mechanism is made of upper fusion contact assembly and lower fusion contact assembly, upper fusion contact
Component is made of preceding upper fusion block, rear upper fusion block, and the both ends of the preceding upper fusion block and rear upper fusion block are respectively equipped with tiltedly
The inclined upper wedge surface in inside downwards, the wedge surface at the both ends of the preceding upper fusion block are equipped with from bottom to top and before being increasingly towards
The inclined convex traveller in side, the wedge surface at the both ends of the rear upper fusion block be equipped with it is preceding on merge the convex traveller at block both ends
Symmetrically from bottom to top and be increasingly towards the convex traveller of back sweep, the lower fusion contact assembly by front lower fusion block and
The both ends of lower fusion block composition afterwards, the front lower fusion block and rear lower fusion block be respectively equipped with it is inclined on the inside of oblique top under
Wedge surface, the wedge surface at the both ends of front lower fusion block be equipped with from top to bottom and be increasingly towards front it is inclined under convex traveller, melt under rear
The wedge surface for closing the both ends of block is equipped with and merges under block both ends convex traveller with front lower and symmetrically from top to bottom and be increasingly towards rear
Convex traveller under inclined, the preceding upper fusion block, rear upper block, the front lower inside for merging block and rear lower fusion block of merging are equipped with confession
The distracted groove of spreading mechanism is driven, the driving spreading mechanism is made of left propulsion assembly, right propulsion assembly, the left side
Propulsion assembly is made of left forward block, driving trombone slide, the top of left forward block be equipped with it is preceding on merge block and the rear block that above merges is matched somebody with somebody
Close slide upper slip wedge surface, it is upper slip wedge surface be equipped with it is symmetrical and inclined towards front and rear sides and respectively with it is preceding on merge
The convex traveller of the convex traveller of block and rear upper fusion block is engaged the upper hopper chute of slip, the lower section of left forward block be equipped with it is front lower
Block and the rear lower lower slider wedge surface for merging block cooperation and sliding are merged, lower slider wedge surface is equipped with symmetrical and inclines towards front and rear sides
Oblique and merge convex traveller under block with front lower respectively and descend the gliding groove for merging convex traveller under block and being engaged slip afterwards, a left side pushes away
Right end and driving trombone slide composition, the left end of the driving trombone slide into block are connected with left forward block, drive the inner tube of trombone slide
Wall be equipped with internal thread, the right propulsion assembly by right forward block, driving screw rod and retainer ring form, the right forward block it is upper
Side be equipped with it is preceding on merge block and upper slip wedge surface that rear upper fusion block cooperation is slided, upper slip wedge surface are equipped with symmetrically simultaneously court
Forwards, backwards both sides it is inclined and respectively with it is preceding on merge block the convex traveller of convex traveller and rear upper fusion block be engaged slip
Upper hopper chute, the lower section of right forward block is equipped with and the front lower lower slider wedge surface for merge block and rear lower fusion block cooperation slip, downslide
Dynamic wedge surface is equipped with symmetrical and inclined towards front and rear sides and merges convex traveller and rear lower fusion under block with front lower respectively
Convex traveller is engaged the gliding groove of slip under block, and the middle part of right forward block is equipped with the step through-hole passed through for driving screw rod, institute
The step through-hole stated is made of single order through hole, second order through hole and three rank through holes, step through-hole be followed successively by from left to right single order through hole,
Simultaneously diameter is sequentially increased for second order through hole and three rank through holes, and one end of the driving screw rod is through single order through hole and with driving trombone slide
It is connected through a screw thread, the other end of screw rod is driven to put in second order through hole and equipped with baffle, the rear end of baffle, which is equipped with, to be put in three ranks and lead to
Driving column in hole, the bottom of the three rank through holes are equipped with the card collar groove of annular, and connection retainer ring blocks retainer ring in card collar groove
The baffle of spiro rod rear end and then fixed driving screw rod are driven, by rotation driving column, and then drive screw turns is driven to push away a left side
Into block and right forward block close to mobile, by convex traveller and upper hopper chute, under slip between convex traveller and gliding groove extend out work
With so upper fusion block, rear upper fusion block, front lower fusion block and rear lower fusion block extend out expansion before making.
2. a kind of four sides according to claim 1 can strut type Invasive lumbar fusion device, it is characterised in that the convex traveller
The angle of inclination of convex traveller is 10 ~ 30 degree under.
3. a kind of four sides according to claim 1 can strut type Invasive lumbar fusion device, it is characterised in that the preceding upper fusion block,
Afterwards anti-slip tank is equipped on the outside of the back of upper fusion block, front lower fusion block and rear lower fusion block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810144108.6A CN108095867B (en) | 2018-02-12 | 2018-02-12 | Four-side-expandable interbody fusion cage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810144108.6A CN108095867B (en) | 2018-02-12 | 2018-02-12 | Four-side-expandable interbody fusion cage |
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| CN108095867A true CN108095867A (en) | 2018-06-01 |
| CN108095867B CN108095867B (en) | 2023-08-01 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109602466A (en) * | 2018-12-17 | 2019-04-12 | 南昌市第医院 | A kind of cervical facet joint fusion device |
| CN109758271A (en) * | 2019-02-20 | 2019-05-17 | 江苏百易得医疗科技有限公司 | A kind of fusion device |
| CN109820626A (en) * | 2019-03-15 | 2019-05-31 | 博能华医疗器械（北京）有限公司 | A kind of Invasive lumbar fusion device of four-way expansion |
| CN111759436A (en) * | 2020-07-23 | 2020-10-13 | 山东第一医科大学附属省立医院(山东省立医院) | Self-guiding four-side expandable under-mirror bone grafting interbody fusion cage |
| WO2021100953A1 (en) * | 2019-11-22 | 2021-05-27 | 이성수 | Expandable intervertebral fusion cage |
| CN115969585A (en) * | 2023-01-10 | 2023-04-18 | 北京纳通医疗科技控股有限公司 | Bidirectional expandable fusion cage |
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